Primary structure and function of trigramin, a novel ligand binding to glycoprotein IIb/IIIa complex of human platelets: Tur-Fu Huang1, John C. Holt2, Jacquelynn J. Cook3, R. F. Tuma3, Edward P. Kirby2 and Stefan Niewiarowski2,3 (1Department of Pharmacology, College of Medicine, National Taiwan University, Taipei, Taiwan, Republic of China; 2Thrombosis Research Center and 3Department of Physiology, Temple University School of Medicine, Philadelphia, Pennsylvania, 19140, U.S.A.)